Natalie Cole has her health on her mind.
The Grammy-winning diva was admitted to a New York City hospital earlier today after suffering a setback stemming from her arduous chemotherapy treatment for hepatitis C.
"She's been under treatrment for hep C, which has been laying dormant in her system from years ago," publicist Maureen O'Connor tells E! News.
"It's a pretty hefty treatment and she's dealing with the side effects."